High performance integrated photonic circuit based on inverse design method

https://phys.org/news/2022-06-high-photonic-circuit-based-inverse.html

"three devices two all-optical switches controlling input states of XOR gate... 2.5 μm×7 μm, and that of a single device was 2 μm×2 μm... distance between adjacent devices 1.5 μm... response time 100 fs, and threshold energy of control light 10 fJ/bit... response time 20 fs... realized a function of identifying two-digit logic signal results. This work provides a new idea for the design of ultrafast, ultra-low energy consumption and ultra-high density integrated photonic circuit"